* Do not show an empty error message when the error service is not found

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1369 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/geckoport/nsErrorUtils.pas

@@ -95,7 +95,9 @@ begin
     rv := es.getErrorStringBundleKey(aError, str);
     if NS_SUCCEEDED(rv) then
       Result := str;
-  end;
+  end
+  else
+    result := SGetServiceManagerError;
 end;
 
 end.